Refrigerator or cooler.



Y O. HIIIEIGHS. REFRIGERATOR 0R COOLER. nruoumn mum nov. 15, me.

Patented Jan. 12, 1909.

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'0. HIN RIOHSQ REFRIGERATOR 0B COOLER.

APPLICATION IILBD NOV. 15, 1906. 909,597, Patented Jan. 12, 1909. 4SHEETS-SHEET 2.

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Wibzy G. HINRICHS. REFRIGERATOR 0B COOLER.

9 O 9, 5 97. urmourox mam nov; 15, 1908 Patented Jan. 12 1909.

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0. HINRIGHS.

REFRIGERATOR 0R COOLER.

APPLICATION FILED NOV. 16, 1906.

Patented Jan. 12, 1909.

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CARL HINRIGHS, OF FRANKFORT-ON-THE-MAIMlGERMANY.

BEFRIGERA'IOB OR COOLER.

No. eoaser.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed November 15, 1906. Serial No. 343,602.

T 0 all whom it may concern:

Be it known that I, CARL HINRIOHS, a subject of the German Emperor, anda resident of F rankfort-on-the-h/Iain, Germany, have invented certainnew and useful Improvements in Refrigerators or Coolers, of which thefollowing is a specification.

The object of my invention is to provide improved refrigerators, orcoolers.

According to my invention the refrigerating chamber is provided, in itsupper part, with an ice container, or with ice containers, which may bearranged side by side, or one behind another, or both side by side andone behind another. Under this ice container, or each of these icecontainers, is arranged a roof-shaped device whose sides slope downwardstowards the sides of the refrigerating chamber and have openings in themfor the passage of air and vapors from beneath, the constructionpreferably consisting of slots arranged after the manner of louvers. Thebottom of the ice container, or of each ice container, corresponds inshape with the roof below it and is arranged as close to it as ispermissible. By this means the cooling surface for the air passing intothe cooling chamber, and therefore the cooling effect, is greatlyincreased, the air passing through the ice container, or containers,being cooled to a very low temperature and descending, on account of itsincreased specific gravity, passes over the roof, or roofs, and acts bysuction on the warmer air and vapors which are under the roof, or roofs,and draws the said warmer air and vapors through openings in the roof,or roofs. The cooled air falling from the ice container, or icecontainers, and the roof, or roofs, exerts pressure on any vitiated, orspent, air in the remainder of the cooling chamber, and expels the saidvitiated, or spent, air through a slit, or slits, at the back, or bothat the back and front, walls of the cooling chamber, which slit, orslits, conducts, or conduct, the said air therefrom to the icecontainer, or ice containers, to be again cooled. As a consequence ofthis arrangement, the air circu ates briskly and uninterruptedly throughthe cooling chamber, thereby removing vapors and bad odors and thecooling space is uniformly cooled.

The invention is applicable to coolers,-refrigerators, and the like,generally.

In the accompanying drawings, Figures 1 and 2 show a coolinginstallation constructed in accordance with this invention with coolingarrangements side by side, Fig. being a partial longitudinal section andFig. 2 a transverse section on the line A-A of Fig. 1. Figs. 3 to 7illustrate arrangements in accordance with this invention applied to arefrigerator, or ice safe, Fig. 3 being a longitudinal section at rightangles to Fig. 4, and Fig. 4 being a cross section at right angle to,and on the line 0-0 of Fig. 3. Fig. 5 shows, partly in section, amodification adapted for exhibiting purposes. Fig. 6 is a verticalsection on the line D-D of Fig. 5, and Fig. 7 is a back View.

In the cooling chamber 1 (Figs. 1 and 2) are arranged side by sideseveral ice containers 2 completely closed against access of er,- ternalair. Each of these ice containers is closed at the lower part by abottom 3 consisting of perforated sheet metal, or wirenetting, or theequivalent, so that the ice water forming can escape from the containers2. Under .each ice container, and completely separated therefrom, is aroof 4: consisting of angularly arranged pieces one above the other andhaving a space between them after the manner of louvers. The bottoms 3of the ice containers 2 are of a shape corresponding to the generalfigure of the roofs 4: and are situated as near to the said roofs as ispracticable. The air cooled in the ice containers 2 passes through thebottoms 3 and is very cold and meets first the surfaces composing theroofs i. On account of its increased specific gravity, the air descendsrapidly over the oblique faces of the roofs and sucks the air and vaporsthat have accumulated directly under the roofs at through the spacesbetween the com ponent parts of the roofs and carries the said air andvapors downward, in a cooled, or condensed, state to the bottom of thecooling chamber. The cooling air thus moves downwards on both sides ofthe roofs 4. A further part of the hotter, or spent, air of the coolingchamber 1 passes through slots 6 provided in the, bottom. ofthe rearwall 5 of the cooling chamber, into passages, or trunks 7 providedbetween the rear wall 5 and the wall of the building, and extending fromthe.

bottom part of the cooling chamber 1 to near the upper part of the icechamber. In the said trunks, the hotter, or spent, air is compressed bythe colder air that moves clown.-

ward. From the trunks 7 the air passes through slots 8 (which connectthe 106 containers 2 with the passages, or trunks, 7) into the'icecontainers 2 wherein it is cooled to issue again through the bottoms 3and take part in. the cooling of the cooling chamber 1.

Inv order that the amount ofcooling air leaving, and passing to, thecooling chamber shall be, aslarge as possible, the ice containers 2 areprovided attheir front, and side,

fallsfrom the; ice containers 2, ontothe roofs 4:, there are arranged oneach of the lower edges of the roofs, gutters 10 leading; tooutletpipes. In order that the escape of the water may take place as quicklyas possible so that, the air doesnot become ladenwith. moisture thatmight settle in the cooling chamber, the two gutters 10 are; arranged soas to slope towards the outlet pipes and the components of the roofs arepreferably made of corrugated plate thereby to provide small channels onsaid roofs running from the top thereof to its lower edge, and.gathering the ice-water and conducting the same speedily into thegutter.

To assist as much as possible the removal of the hotter, or spent, airfrom the cooling chamber, suction pipes 11 are distributed in thecooling chamber, one end of the said pipes opening-into the said chamberand. the other end opening into thetrunks 7. When these suction pipesare 026 great length, they are preferably provided with suction nozzlesopening into the cooling chamber... Hotter, or spent, air from thecooling chamber is drawn through the suction pipe 11 by the currents ofair rising in the trunks 7 The charging of the ice containers. 2, iseffected through doors12 provided in the front walls of the coolingchambenor the charging may be effected through openings. arranged inthetop over the ice containers, or the chargingmay be effected throughside doors 13 (Fig. 1). In cooling chambers of great depth, the icecontainers may be arranged not only side by side, but also one behindthe other. In this casethe trunks, or passages 7, connecting the; lowerpart of the cooling chamber with the ice containers are preferablyarranged both in. the front and rear walls of t'he cooling chamber.

Important advantages which the hereinbefore described arrangementpossesses over those hitherto known are that a. downward current Ofitllpasses over the articles placed in the cooling-"chamber and thatmoisture fore described, the air cooled. in the ice container 2 escapingthrough. the said; bottom and meeting the roof 4 and passing down it.

and sucking, through the spacesin, the roof, the air and vapors thathave accumulated under the saidv roof, the said air; and vapors beingcooled and condensed and passing downwards into the cooling chamber, as,1n,

the; arrangement shownin' Figs. 1 and. 2.

Below both of the lower edgesof the roof 4,

the side walls 15' project. inwards, whereby the current of the cooled.Pull 1s deflected from its downward course sldewise of the coolingchamber, andi directed. towards the The air which descendsv is. divertedinwards at these places so that the cold air traverses the middleportion of the,-

A further part of the center thereof.

cooling chamber. hotter, or spent, air in the cooling chamber passes, asin thearrangement shown; in Figs, 1 and 2, through a slot 6 in. the rearwall near its lower end, into a passage, or trunk, 7, wherein it iscompressed bythe descend.-

ing colder air and. then raised through theslot 8 and trunk 7 into theice container wherein it is cooled to again pass throughthe bottom 3 andtake part 111 the cooling of the cooling chamber. Also, as in the anrangement shown, in F igs. 1 and 2, in order that the quantity of airpassing from theice container 2. to the cooling chamber may be as large?as possible,ethe said ice containeris erovided at its front and; sidewalls with air outlet openings 9. The air escapes fromthese, sinks.along the side furfaces 1 5 and along the front wall of the coolingchamber with the air issuing from. the ice tank 2. Also, asin thearrangement shown in Figs. 1 and 2, therear side of the ice container 2extends as far as the rear wall. of the cool.

ing chamber and is not provided with any i outlet openings, so that aircannot issue from the ice container at its rear side, and to lead awaywater that trickles down from the ice container 2 onto the roof 4t,gutters 10 connected to outlet pipes 16 are provided. To collect thewater, there is provided, below the cooling chamber, a separatereceptacle 17 fitted with a cock to empty it.

lhe cooling arrangement shown in Figs. 5, 6 and 7 is generallyconstructed like that shown in Figs. 3 and 4. It is provided withshelves 18 for the reception of the various articles to be cooled, andthe chamber let is, at the front part, closed by doors 19, which can beturned down on horizontal hinges. At the side and rear parts, thechamber is closed by fixed walls. In the arrangement shown, the rearface of the chamber 14 is constituted by a double wall, part of which isof glass. The other walls can be constructed in the same manner ifdesired. By thus making one, or more, of these sides of glass, or byproviding the sides with panes of glass, the cooling device thusconstructed can be used as cases for exhibiting the articles containedtherein.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is z- 1. In a refrigerator, the combination with a casinghaving a provision chamber, and an ice-chamber above the provisionchamber, of means forming a passageway between the ice and provisionchambers, the inlet to said passage from the ice chamber being at ahigher level than the outlet of the passage and the outlet from theprovision chamber into said passage being directed towards the outlet ofthe passage and closed toward the connection between said passage andthe ice-chamber, said passage being adapted to direct the cooling mediumdownward and sidewise of the provision chamber.

2. In a refrigerator, the combination with a casing having therein aprovision chamber, of a roof for said provision chamber, an iceboxarranged above said roof and having its bottom adjacent thereto andforming a passage therewith, the bottom of the ice-box being aperturedto form an inlet to said passage from the ice-box at a higher level thanthe outlet of the passage, the outlet of said passage communicating withthe provision chamber and adapted to direct the cooling medium from thepassage downward and sidewise of said chamber, and the roof of theprovision chamber having therethrough a passage that connects saidchamber with said passage between the ice-box and provision chamber andhas its discharge end directed toward the outlet of the last saidpassage and not opening toward the aperture in the bottom of theice-box.

3. In a refrigerator, the combination with a casing having therein aprovision chamber, of a sloping roof for said provision chamber, anice-box arranged above said roof and having its bottom adjacent theretoand form ng a passage therewith, the bottom of the 108-- box beingapertured to establish communication between the ice-chamber and passageand the outlet of said passage being arranged to deliver the coolingmedium downward and sidewise of the provision chamber, the roof of thelatter having therein a duct extending from the provision chamber tosaid passage and having its discharge end dlrected toward the outlet ofthe latter and closed toward the passage from the ice-box.

4:. In a refrigerator, the combination with a casing having therein aprovision chamber, and an ice chamber arranged above the provisionchamber, of a sloping roof for the provision chamber forming a passagebetween said chambers and communicating with and adapted to direct thecooling medium downwards and sidewise of said provision chamber, saidroof being composed of louver-boards providing ducts connecting theprovision chamber and passage and opening toward the outlet of thelatter.

5. In a refrigerator, the combination with a casing having therein aprovision chamber, of a sloping roof for said chamber, an ice boxarranged above said roof and having a perforated bottom adjacent theretoand forming a passage therewith, adapted to direct the cooling mediumdownward and sidewise of the provision chamber, said roof being composedof louver-boards providing ducts connecting the provision chamber andpassage and opening toward the outlet of the latter.

6. In a refrigerator, the combination with a casing having a provisionchamber, and an ice-chamber in its upper part, of a roof for saidprovision chamber forming a passage between the ice and provisionchambers, the bottom of the ice chamber being apertured to connect saidice-chamber and passage, the inlet to said passage from the ice-chamberbeing disposed at a higher level than the outlet of the passage, saidroof having therein a passage extending from the provision chamber tosaid passage between the ice and provision chambers and having itsoutlet directed towards the outlet of the last said passage and closedtowards the ice-box, and a trunk connecting the lower part of theprovision chamber with the upper part of the ice-chamber.

7. In a refrigerator, the combination with a casing having a provisionchamber, and an ice-chamber in its upper part, of a roof for saidprovision chamber forming a passage between and communicating with bothsaid chambers, the inlet to said passage from the 5' outletdirectedtowards the outlet of the p'asicewhamben being disposed.at-ahigher level at, an intermediate pointin its; length with; 10 thanthe: outlet of: the passage, and the cont-heprovision chamber. nectionbetween the provision chamber and g In testimony whereof I have signedmy. said passage, through said roof, having its name to thisspecification in the presence of i two subscribing witnesses. r sage andclosed toward theice-box, a trunk CARL HINRICHS. connecting'the lowerpart of the provision chamber with the upper part of the icechamber, anda: pipe connecting said trunk \Vitnesses FRANZ NArLAoHER, ERWIN DIPPEL.

